225420021046 has 128 divisors (see below), whose sum is σ = 427826188800. Its totient is φ = 87686645760.

The previous prime is 225420021023. The next prime is 225420021077. The reversal of 225420021046 is 640120024522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35647641 + ... + 35653963.

It is an arithmetic number, because the mean of its divisors is an integer number (3342392100).

Almost surely, 2^225420021046 is an apocalyptic number.

225420021046 is a deficient number, since it is larger than the sum of its proper divisors (202406167754).

225420021046 is a wasteful number, since it uses less digits than its factorization.

225420021046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6574.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 225420021046 its reverse (640120024522), we get a palindrome (865540045568).

The spelling of 225420021046 in words is "two hundred twenty-five billion, four hundred twenty million, twenty-one thousand, forty-six".